noun (plural same)
One million hertz, especially as a measure of the frequency of radio transmissions or the clock speed of a computer.
- The switching frequency of 1 megahertz makes it possible to select a small external component.
- The bandwidth of 100 megahertz was divided up into 256 closely adjacent carrier frequencies that do not interfere with one another.
- The speed of processors, usually known as clock speed, is measured in megahertz or these days in gigahertz (GHz).
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